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Question 49
Select the number from the given options that can replace the question mark (?) in the following series.
482, 239, 158, 131, 122, ?
Solution
$$482-3^5 =Â 482-243 = 239$$
$$239-3^4 =Â 239-81 = 158$$
$$158-3^3 =Â 158-27 = 131$$
$$131-3^2 = 131-9 = 122$$
$$122-3^1 = 122-3 = 119$$
So here '119' will come in place of the question mark.
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